Question

A compound important in prebiotic evolution was
A.\[S{{O}_{2}}\]
B.\[C{{H}_{4}}\]
C.\[S{{O}_{3}}\]
D.\[NO\]

Answer 1

Hint: Prebiotic evolution is the stage that is believed to have taken place before the first living organisms appeared, during which time the abiotic synthesis of monomers, oligomers, and supramolecular systems that contributed to the hypothesised environment of RNA took place.

Complete answer:
Evolution, as the term is used, means any growth or improvement that adapts to the climate. Chemical evolution refers to modifications in chemical elements, thus suggesting that changes in molecules occur fundamentally. "In a cosmic setting typically on the prebiotic (or primitive) Planet, "chemical evolution" is often used synonymously with''abiotic `` or''prebiotic creation" of organic molecules.
The earth's ancient atmosphere, which was rich in water vapour, carbon monoxide, carbon dioxide, nitrogen and hydrogen, reduced the atmosphere with little to no oxygen. As sources of energy for chemical reactions between primitive gases, UV light, high temperature and lightning were used to form simple inorganic elements such as water, ammonia, methane and cyanides.
These basic elements were washed by rain from the atmosphere to the ocean in which simple organic compounds such as sugars, amino acids, fatty acids, glycerol and nucleotides were produced by polymerization and condensation reactions. It has been experimentally shown that complex organic compounds can form a mixture of methane, water vapour, hydrogen and ammonia.Methane was supplied with a short hydrocarbon skeleton or long hydrocarbon chains as present in sugars, amino acids, fatty acids and nucleotide bases.

Hence, the correct answer is option (B)

Note: Miller and Urey presented the first evidence for the chemical synthesis of amino acid proteins. The lack of methane stopped these monomers from being synthesised in a glass chamber. In the glass chamber, water was used as a tool for the chemical synthesis of organic compounds. In the primitive atmosphere of reduction, oxygen and thus oxides were absent.